Contacting me directly is rarely a quick way to get help with a project or a technical problem. GitHub issue lists are a good place to start (Turing Machine, Radio Music), a search of MW DIY will often find answers, as will looking at the Facebook Synth DIY group.

Most Music Thing designs are published under a CCBYSA Creative Commons license. That means you can build them, share them, sell them, hack them and modify them as long as you give credit and share all your changes under the same license. Many DIY-ers put together Thonk kits as a service for people who don't solder themselves, charging a fair price for their skill and time.

However, if you are creating new products based on my open source designs, please do not use the brand 'Music Thing Modular' or the module names I've used for commercial versions. If you are not adding anything to products that are commercially available (i.e. kits from Thonk), consider doing something different. If you'd like to sell a commercial version of one of my products, please get in touch first.